SendAPI – Multichannel Messaging API | WhatsApp, SMS & Email
Multichannel Messaging API — WhatsApp, SMS & Email
SendAPI is a unified messaging API for developers. Send WhatsApp messages, SMS, OTP<br>verification codes, and transactional email from a single REST API endpoint using one API key.<br>SendAPI is an official Meta Business Solution Provider with delivery to 190+ countries.
Channels
WhatsApp Business API — Official Meta Business Solution Provider.<br>Send template messages, notifications, rich media (images, PDFs, video), and interactive<br>buttons. Handle two-way conversations at scale.
SMS & OTP API — Global carrier reach in 190+ countries.<br>Built-in OTP verification flows with multi-channel failover (SMS → WhatsApp → Email).
Transactional Email API — Dedicated IP pools, DKIM/SPF/DMARC,<br>and real-time delivery webhooks for password resets, receipts, and notifications.
Why Developers Choose SendAPI
One unified API key for all channels — no per-product accounts
Self-serve signup — live in minutes, no sales call required
Transparent flat pricing — from $9/month, no per-message surprises
Type-safe SDKs for TypeScript, Python, and Go
Idempotency keys for safe retries
7-day free trial, no credit card required
Pricing Plans
Plan<br>Monthly<br>Emails / mo<br>WhatsApp Sessions<br>API Keys
Starter$9.995,00011<br>Growth$29.9925,00033<br>Business$79.99100,0001010<br>EnterpriseCustomUnlimitedUnlimitedUnlimited
SMS usage billed via top-up credits. 7-day free trial on all plans.